Color projection lamp



June 1e, 1942. QE. ,SARTHE-L mL 2,286,783

COLOR PROJTEGTION LAMP l Filed Aug. '25,1939 2 sheets-sheet 1 L/ysf'? EI BARTHEL, /YoMAN E'. mja/f5.1?.

Smnentor June 16, 1942.

o. E. BARTHEL EVAL COLOR PROJEcTIoN-LAMP Filed Aug. 2s, 1939' 2 sheets-sheet 2 (Ittomeg Patented June 16, 1942 COLOR, PROJECTION LAMP Oliver E. Barthel and NormanrE. Marker, Detroit, Mich.

Appucatipn August 23, 1939ser'ia1N0. 291,469

2 Claims.

This invention relates generally to color therapy apparatus and more particularly to color projection lamps.

The therapeutic or curative value of the suns rays for human ailments has long been recognized, as these rays or color vibrations stimulate the nerves, organisms, protoplasm, etc., causing a general subduing and balacing of the nervo-us system, also a renewal of the worn out cells of the protoplasm breaking down and deleting all forms of congestion in the human body. Certain of the light rays such as the invisible, infra-red, ultra violet, X-rays and radium rays are benecial only on limited exposure thereto and become harmful on over exposure. Color projection apparatus have been proposed which iilter out the invisible rays, retaining the visible colors, green, yellow, orange, red, violet and blue together with combinations thereof, but such apparatus have not proved entirely satisfactory for, among other reasons, such apparatus also filtered out most of the beneficial rays along with the invisible rays.

Accordingly it is an object of the present invention to provide a new and improved color projection device or lamp of improved therapeutic value.

Another object is to provide a color projection lamp of a character such that only the invisible part of the spectral range is ltered out, permitting the balanced beneficial color ray to travel on at the correct vibration to the patient.

Another object of the invention is to provide a new and improved means for removing substantially all heat from the light rays, furnishing as cold a light as is possible from electric bulbs.

A further object of the invention resides in the material and form of a color plate or screen for successful therapeutic results. When these screens are properly embossed, the indentures being within a correct dimensional range, it is possible to obtain a spectral balance of the colors employed.

Other objects of the invention will become apparent from the following detailed description taken in connection with the accompanying drawings, in which- Figure 1 is a vertical sectional view of our color projection lamp;

Fig. 2 is a front view of the lamp;

Fig. 3 is a view in elevation of a colored screen employed in the lamp;

Fig. 4 is an enlarged View in section of the colored screen;

Fig. 5 is a view partly in elevation and 'partly in vertical section of a modified form of color projection lamp, and

Fig. 6 is a cross sectional view of the lamp, taken along the line and in the direction of the arrows 6 6 of Fig. 5.

Referring to the drawings by charac-ters of reference and first to Figs. 1 to 4, the lamp includes a hollow body or casing Il] which may be made of sheet metaLcylindrical in shape and have a front wall II and a rear wall I2. In the cylindricalsde wall of the casing I0, a threaded aperture is providedv in which is screwthreaded a socket I3 for a lightbulb I4 which extends upwardly within the casing. A suitable standard I5, wherein the usual electric wiring (not shown) may be contained, is lprovided and the bulb I4 is preferably the well known 50 watt projection bulb wired to a so-called asher button.

In the casing front wall II is provided a plurality of radially spaced openings of general triangular shape, and respectively closing the openings are colored transparent sheets, plates or screens I 6. These screens I6 are of different colors, there being six in the present instance which are preferably green, yellow, orange, red, Violet and blue, arranged radially in the order named. In order that the beneficial light rays are not ltered out with the invisible rays, the color screens I6 are made of a cellulose material, preferably Cellophane paper and, to further enhance the therapeutic value of the light projection, the screens I6 are embossed to provide prisms Ia for diffusing the light. Thus, the light from the bulb I4 is filtered to retain only the visible light rays of the several colors mentioned, these several different colors being projected together to insure that a patient will receive a balanced color of the correct vibration which will do the most good for the particular ailment.

For best results, we provide a second color projection lamp l'I for concentrating a, color on a particular part of a patient and, in this instance, the lamp I'I is mounted within the casing Ill adjacent the top thereof. The lamp I'I includes a casing formed in part by a pair of aligned tubes I8 and I9, the forward tube IB projecting externally of the casing I0 through an opening in the casing front wall II. The rear end of the casing tube I9 is closed by a cap 20 which is screwthreaded thereon and holds a light reflector or mirror 2I in place, and projecting into the casing in advance of the mirror 2I is a light bulb 22 supported in a socket 23 which in turn is supported by a bracket 24 secured to the casing tube I9,l

Fitted over the outer end of the casing tube I8 is an open-ended sleeve 25 which may be frictionally or otherwise suitably held thereon and within the sleeve is a lens 26 which is made of a suitable cellulose material. The lens 26 may be held in place by suitable snap rings 2'I or by any other suitable means. Also, within the sleeve 25, a colored screen 21a is provided in advance of the lens 26 and like the screens I 6 is made of a cellulose material, preferably Cellophane paper embossed to provide prisms for diffusing light. The thin Cellophane paper is held taut by cellulose plates 28 positioned on opposite.

Interposed in the casing between the light bulb 22 and the lens 26 is a chamber 32 containing a liquid cooling medium, preferably distilled water, through which the light rays pass and are cooled thereby. Surrounding the inner end portions of the casing tubes I9 and I9 is an open ended sleeve 34 having intermediate its ends an internal annular extended portion or flange 35 against the opposite sides of which a pair of light transmitting or transparent plate members 36 seat and cooperate therewith to form the water chamber 32, the plate members 36 being made of a cellulosev material which, unlike glass, for example, will not intercept the beneficial light rays. Disposed on opposite sidesY of the plate members 36 compressible gaskets 31 are'provided against which the opposed ends of the casing tubes I8 and I9 respectively'abut, the sleeve 34 being screw-threaded onto the ends of the tubes I8 andv I9 and tightened down to draw the tubes together, compressing the gaskets to provide the chamber 32 leak proof. Thesleeve 34 is preferably provided with external heat radiating'ns 38.parts of which project externally of, the casing I0 through an opening 39-in the cylindrical side wall thereof. Intermediate its ends, the sleeve 34 is provided with anV external extended annular. portion 4I)v integral with which is the internal flange 35 and through the portion 40 and flange 35a passage or-bore 4I is provided for introduction of water or other cooling medium into the chamber 32, the passage being closable by a. suitable plug or relief valve 4-2.

Referring nowv to the modifiedform of lamp shown in Figs. 5 and 6, the numeral 44 designates the lamp body or casing having a front opening closable by a removable closure member 45 which may be held in place by an inner snap ring 46- and an outer rim 41. Within the lamp body 44 an electric motor 48 drives a rotatable plate or disc 49 at the proper speedV to obtain a. balance in color and overlies and is spaced from theclosure member 45, the disc 49vbeing mounted on and held to the motor shaft 50 by a nut 5I. As shown in Fig. 6, the disc 49 is provided with a plurality of radially spaced openings which are respectively closed by differentcolored screens. 52, which like the screens ofV the previously. described lamp-aremade of a cellulose Ymaterial, preferably Cellophane paper, embossed to provide prisms for diffusing light rays. The

A number of these sleeves 25,

colored sheets of Cellophane paper may be cemented on the back of the disc 49 or be otherwise suitably attached thereto.

The motor 48 is supported and suspended by a strap or bracket 53 which is rigidly secured to the top of the casing 44, and also supported by the bracket 53 is a tubular casing 54 containing a light bulb 55. The forward end of the casing 54 is open, as at 56, and is positioned oi center of the disc 49 to register with the colored screens 52 as they pass the open end 56 of the casing 54. Also registering with the light bulb casing 54 is an opening 5l provided in the opaque closure member 45 through which the light rays emit from the lamp casing 44.

Mounted on top of the casing 44 is a second lamp, designated in general by the numeral 58, providedfor projecting a single color at a time. This lamp 58 is substantially the same in structure as` the lamp I'I of Fig. 1 and therefore like but primed numerals have been given like parts to avoid unnecessaryv repetitions description. The lamp 58 is supported at its rear end by a tube 60, one end of which is welded to the lamp body 44V andV the other or upper end of the tube 60 is welded to the upper lamp body I9 and registers with an opening 63 therein. The tube 66 houses the socket of the bulb 2 2 and connects the interiors of the two lamp bodies or casings, the bulb 22 projecting through the relatively large opening 63 into the upper lamp casing I9 adjacent the reflector 2|. Above the bulb 22' the wall of casing I9 and the capv 20 are provided with aligning'slots 64 for the passage of heated air from the casing I9 to outside atmosphere. Within the casing 44 is a fan 6I driven by the motor 43 for discharging heated air from the casing 44, the air passing through tube 60 into the casing I9 whenceA it escapes to outside atmosphere through apertures 64 and 62 provided in the casing' I 9. Thus, it will be seen that the fan 6I not only discharges the heated air from the large casing but also cools bulbv 22 and further cools the water cooling structure including the container 40.

Inoperationof the lamp of Figs. 5.and'6, the motor 48 rotates the disc 49 resulting in the coloredl screens 52 successively passing in front of the casing opening 56 whereby balanced coloredlight is vprojected through the opening 5'I. At the same time, the lamp 5,8 may be employed to concentrate a particular color on a patient. Thus in this lamp, like the first describedlamp,

a patient receives the benefitof a particular color and also the benet of a plurality of different colored rays or vibrations. By referring to the several colors as' balanced is meant that the sumof the degreev of color vibration of all of the colors is While we have shown andA described our invention in detail it is to be understood that the same is toV be limited only by the appended claims for many changes may be made without departing from the spirit and scope of the. invention.

What we claim is:

1. In a color wave projection lamp, a casing having an outlet for light, a light source within said casing, a sheet of colored cellulose material arranged in the path of light raysand. having prismatic formations for diffusing. the light, la pair of cellulose plate members on oppositesides of said colored cellulose material, a spacer ring engaging an outer border portion ofsaid cellulose material, said plate membersbeing spaced from the prisrnatic form-ations by said spacer ring, and means for urging said cellulose plate members toward each other to hold said cellulose material taut.

2. In a color wave projection lamp, a pair of tubular sections longitudinally aligned, an open ended sleeve member having external ns and tted over the opposed ends of said sections cooperating therewith to provide a casing, said sleeve member having an internal annular extended portion disposed between the opposed ends of said sections, a pair of transparent plate members positioned on opposite sides of said extended portion and cooperating therewith to provide a closed chamber for a cooling liquid, a light source in one of said sections on one side of said chamber, the other of said sections having an opening for emission of light from the casing, and a transparent colored member on the other side of said chamber in the path of the light rays.

OLIVER E. BARTHEL.

NORMAN E. MARKER. 

